Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May comes with an increase, with the average high-temperature moving from a wintry 35.2°F (1.8°C) in April to a chilly 46.2°F (7.9°C). Haines reports an average low-temperature of 33.8°F (1°C) during the nights of May.Humidity
The least humid month is May, with an average relative humidity of 78%.Rainfall
In Haines, in May, during 17.7 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 200.4 rainfall days, and 48.03" (1220mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.5 snowfall days, in May, Haines aggregates 0.08" (2mm) of snow. In Haines, during the entire year, snow falls for 83.4 days and aggregates up to 86.57" (2199mm) of snow.Ocean temperature
In Haines, the average seawater temperature in May is 43.3°F (6.3°C).Note: It is risky to swim in 43.3°F (6.3°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.
Daylight
In Haines, the average length of the day in May is 17h and 2min.On the first day of May, sunrise is at 5:00 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 3:57 am and sunset at 10:01 pm AKDT.
Sunshine
The average sunshine in May is 8.9h.UV index
In Haines, the average daily maximum UV index in May is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 2 during May, leads to the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Haines?
What is the least humid month?
What is the average humidity in May in Haines?
How many days does it rain in May?
What is the last month it snows?
How cold is the water in May?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Haines have in May?
What is the UV index reading in May in Haines?
Average temperature in May
Haines, AK
- Average high temperature in May: 46.2°F
The warmest month (with the highest average high temperature) is July (56.5°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in May: 33.8°F
The month with the highest average low temperature is August (44.1°F).
The coldest month (with the lowest average low temperature) is February (12.4°F).
Average pressure in May
Haines, AK
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is July (30.01"Hg).
The month with the lowest atmospheric pressure is November (29.81"Hg).
Average wind speed in May
Haines, AK
- Average wind speed in May: 4.7mph
The windiest month (with the highest average wind speed) is January (6.7mph).
The calmest month (with the lowest average wind speed) is May (4.7mph).
Average humidity in May
Haines, AK
- Average humidity in May: 78%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (78%).
Average rainfall in May
Haines, AK
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is November (5.87").
The driest month (with the least rainfall) is June (2.2").
Average rainfall days in May
Haines, AK
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is October (20.2 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in May
Haines, AK
- Average snowfall in May: 0.08"
The month with the highest snowfall is December (21.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Haines, AK
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is December (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Haines, AK
- Average sea temperature in May: 43.2°F
The best month for swimming (with the highest average sea temperature) is August (53.1°F).
The coldest month (with the lowest average sea temperature) is March (39.6°F).
Average daylight in May /
Average sunshine in May
Haines, AK
- Average daylight in May: 17h and 0min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in May
Haines, AK
- Average sunshine days in May: 10 days
The month with the most sunshine days is February (10.4 days).
The month with the least sunshine days is June (6.3 days).
Average UV index in May
Haines, AK
- Average UV index in May: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in May
Haines, AK
- Average cloud cover in May: 47
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 47).
Average visibility in May
Haines, AK
- Average visibility in May: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Haines, Alaska, USA
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